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ZZZ15326 Existing Proposed Drainage - Wetland Type II24-hr 10-yrRainfall=4.26" <br />Prepared by Microsoft Printed 6/8/2017 <br />HydroCAD® 10.00-14 s/n 01542 ©2015 HydroCAD Software Solutions LLC Pape 22 <br />Summary for Subcatchment 4S: TO INFILTRATION B <br />Runoff = 1.06 cfs @ 12.00 hrs, Volume= <br />0.070 af, Depth= 1.14" <br />Runoff by SCS TR-20 method, UH=SCS, Split Pervious/Imperv., Time Span= 0.00-72.00 hrs, dt= 0.01 hrs <br />Type II 24-hr 10-yr Rainfall=4.26" <br />Area (sf) CN Description <br />6,115 98 Paved parking, HSG B <br />12,000 39 >75% Grass cover, Good, HSG A <br />13,986 61 >75% Grass cover, Good, HSG B <br />32,101 60 Weighted Average <br />25,986 51 80.95% Pervious Area <br />6,115 98 19.05% Impervious Area <br />Tc Length Slope Velocity Capacity Description <br />(min) (feet) (ft/ft) (ft/sec) (cfs) <br />7.9 100 0.0400 0.21 Sheet Flow, <br />Grass: Short n= 0.150 P2= 2.85" <br />Subcatchment 4S: TO INFILTRATION B <br />Hyd rog raph <br />■ Runoff <br />10-yr Ra4nfall=4.26" <br />Runoff Area-32,101 sf <br />Runoff olLlme=0, 070 of <br />Runoff Depth=1.14" <br />Flow Length-100' <br />Slope-N.9400 <br />Tc= 7.9 mnn <br />CN=51/98 <br />2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 <br />Time (hours) <br />